Engine : Expired / Refrigeration AC - 526/252
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| Minor repairs may be performed on low pressure refrigerant systems without recovering the refrigerant charge if the pressure in the system is raised to atmospheric. How may this be accomplished? |
| A) pressurize the system with nitrogen |
| B) open the system vent to the atmosphere and allow the pressure to equalize |
| C) charge the system until it is completely filled with liquid refrigerant |
| D) heat the refrigerant |
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